From Cubscoutpack.com

Do you ever notice how pleasant it is to be around people who have a cheerful attitude? On the other hand, we sometimes avoid a person who is grumpy and looks on the dark side of things. There are many reasons for not being cheerful, but in spite of these things, it is best to keep your feelings to yourself. Cub Scouts who have a cheerful attitude not only make life easier for themselves, but spread their happiness to others.